Economic Optimal Dispatch for Grid-Connected AC Microgrid Considering TOU Tariffs

Aiming at the key problem of lower dispatch economic benefit of AC microgrid project in eastern Inner Mongolia, China, this paper presents an optimum economic dispatch model to maximize the total economic income under TOU tariffs during the whole dispatch period. Then a microgrid dispatch flow chart is proposed to coordinate four typical dispatch strategies, which are given according to system supply-demand conditions in islanding and grid-connected operations. Finally, the proposed models and strategy are verified and the influences of dispatch strategies on the economic dispatch are discussed. The simulation results show that the proposed method is effective and feasible.